ArticleBritish journal of pharmacology2021
Paradoxical changes in brain reward status during oxycodone self-administration in a novel test of the negative reinforcement hypothesis.
Article in British journal of pharmacology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 24 papers.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
24 citing papers in PubMed, 26 citations in OpenAlex.
- Impact of sex on heroin intravenous self-administration by heterogeneous stock rats.Psychopharmacology · 2026Article
- Impact of Age on Heroin Intravenous Self-Administration in Wistar Rats.bioRxiv : the preprint server for biology · 2026Article
- Impact of Sex on Heroin Intravenous Self-Administration by Heterogeneous Stock Rats.bioRxiv : the preprint server for biology · 2026Article
- Negative affective states are not detected in rats following an intravenous self-administration regimen leading to incubation of oxycodone craving.bioRxiv : the preprint server for biology · 2026Article
- Changes in perineuronal net and parvalbumin expression in the orbitofrontal cortex of male Wistar rats following repeated fentanyl administration.bioRxiv : the preprint server for biology · 2026Article
- Neurobehavioral Effects of "Dry Hit" Nicotine E-Cigarette Vapor Inhalation in Adolescent Wistar Rats.bioRxiv : the preprint server for biology · 2026Article
- Cannabidiol reduces oxycodone self-administration while preserving its analgesic efficacy in a rat model of neuropathic pain.Scientific reports · 2026Article
- Changes in perineuronal net and parvalbumin expression in the orbitofrontal cortex of male Wistar rats following repeated fentanyl administration.Frontiers in neuroscience · 2026Article
- A Challenge To The Assumption That Short- versus Long-Access Groups of Opioid Users Represent Distinct Phenotypes.bioRxiv : the preprint server for biology · 2025Article
- Methamphetamine and α-pyrrolidinopentiophenone (α-PVP) intravenous self-administration in female and male rats.Psychopharmacology · 2025Article
- Nonpharmacological and pharmacological influences on opioid effects: A review of clinical research findings.The Journal of pharmacology and experimental therapeutics · 2025Review
- Methamphetamine and α-pyrrolidinopentiophenone (α-PVP) Intravenous Self-Administration in Female and Male Rats.bioRxiv : the preprint server for biology · 2025Article
- Escalated Oxycodone Self-Administration Is Associated with Activation of Specific Gene Networks in the Rat Dorsal Striatum.International journal of molecular sciences · 2025Article
- Escalation of intravenous fentanyl self-administration and assessment of withdrawal behavior in male and female mice.Psychopharmacology · 2025Article
- Neuroplasticity-related genes correlate with individual differences in distinct phases of oxycodone self-administration in male rats.Neuropharmacology · 2024Article
- Adult Consequences of Repeated Nicotine Vapor Inhalation in Adolescent Rats.Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco · 2024Article
- Daily treatment with the dual orexin receptor antagonist DORA-12 during oxycodone abstinence decreases oxycodone conditioned reinstatement.Neuropharmacology · 2023Article
- Oxycodone: A Current Perspective on Its Pharmacology, Abuse, and Pharmacotherapeutic Developments.Pharmacological reviews · 2023Review
- Systemic kappa opioid receptor antagonism accelerates reinforcement learning via augmentation of novelty processing in male mice.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2023Article
- Effects of α-pyrrolidino-phenone cathinone stimulants on locomotor behavior in female rats.Drug and alcohol dependence · 2021Article
Corrections and comments
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
Abstract
background and purposeThe extra medical use of, and addiction to, prescription opioid analgesics is a growing health problem. To characterize how prescription opioid abuse develops, this study investigated the affective consequences of escalating prescription opioid use using intracranial self-stimulation (ICSS) reward and oxycodone intravenous self-administration (IVSA) models. EXPERIMENTAL APPROACH: Male Wistar rats were given access to oxycodone IVSA (0.15 mg·kg KEY
resultsRats given LgA to oxycodone escalated their responding more than ShA rats, with further significant increases observed following each 60-h discontinuation. Presession brain reward thresholds increased with sequential daily LgA IVSA sessions, consistent with a growing negative affective state consequent to successive daily intoxication/abstinence cycles. A 1-h oxycodone IVSA interval was sufficient to normalize these elevated reward thresholds, as was, paradoxically, a 60-h weekend abstinence. The increase in ICSS thresholds was attenuated in a group treated with the long-acting κ-opioid antagonist norbinaltorphimine prior to IVSA training. CONCLUSION AND IMPLICATIONS: Changes in brain reward function during escalation of oxycodone self-administration are driven by an interplay between κ-opioid receptor-mediated negative affective state associated with escalated oxycodone intake and dynamic restoration of brain reward status during longer periods of abstinence.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.